Close https://github.com/go-gitea/gitea/issues/21640
Before: Gitea can create users like ".xxx" or "x..y", which is not
ideal, it's already a consensus that dot filenames have special
meanings, and `a..b` is a confusing name when doing cross repo compare.
After: stricter
Co-authored-by: Jason Song <i@wolfogre.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: delvh <dev.lh@web.de>
* Validate External Tracker URL Format
Add some validation checks for external tracker URL format.
Fixes #7068
* Don't make {index} a hard requirement
* Fix Description
* make fmt
* move regex to package level
* fix copyright date